sbin/iscontrol/iscontrol.c

   1 /*-
   2  * Copyright (c) 2005-2008 Daniel Braniss <danny@cs.huji.ac.il>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27 /*
  28  | $Id: iscontrol.c,v 2.2 2006/12/01 09:11:56 danny Exp danny $
  29  */
  30 /*
  31  | the user level initiator (client)
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/socket.h>
  37 #include <sys/sysctl.h>
  38 #include <sys/module.h>
  39 #include <sys/linker.h>
  40
  41 #include <netinet/in.h>
  42 #include <netinet/tcp.h>
  43 #include <arpa/inet.h>
  44 #include <sys/ioctl.h>
  45 #include <netdb.h>
  46 #include <stdlib.h>
  47 #include <unistd.h>
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <fcntl.h>
  52 #include <time.h>
  53 #include <camlib.h>
  54
  55 #include "iscsi.h"
  56 #include "iscontrol.h"
  57
  58 #define USAGE "[-dv] [-c file] [-n nickname] [-t target] [variable=value ...]"
  59 #define OPTIONS "vdc:t:n:"
  60
  61 token_t AuthMethods[] = {
  62      {"None",   NONE},
  63      {"KRB5",   KRB5},
  64      {"SPKM1",  SPKM1},
  65      {"SPKM2",  SPKM2},
  66      {"SRP",    SRP},
  67      {"CHAP",   CHAP},
  68      {0, 0}
  69 };
  70
  71 token_t DigestMethods[] = {
  72      {"None",   0},
  73      {"CRC32",  1},
  74      {"CRC32C", 1},
  75      {0, 0}
  76 };
  77
  78 int     vflag;
  79 char    *iscsidev;
  80
  81 /*
  82  | Default values
  83  */
  84 static isc_opt_t opvals = {
  85      .port                      = 3260,
  86      .sockbufsize               = 128,
  87      .iqn                       = "iqn.2005-01.il.ac.huji.cs:",
  88
  89      .sessionType               = "Normal",
  90      .targetAddress             = 0,
  91      .targetName                = 0,
  92      .initiatorName             = 0,
  93      .authMethod                = "None",
  94      .headerDigest              = "None,CRC32C",
  95      .dataDigest                = "None,CRC32C",
  96      .maxConnections            = 1,
  97      .maxRecvDataSegmentLength  = 64 * 1024,
  98      .maxXmitDataSegmentLength  = 8 * 1024, // 64 * 1024,
  99      .maxBurstLength            = 128 * 1024,
 100      .firstBurstLength          = 64 * 1024, // must be less than maxBurstLength
 101      .defaultTime2Wait          = 0,
 102      .defaultTime2Retain        = 0,
 103      .maxOutstandingR2T         = 1,
 104      .errorRecoveryLevel        = 0,
 105
 106      .dataPDUInOrder            = true,
 107      .dataSequenceInOrder       = true,
 108
 109      .initialR2T                = true,
 110      .immediateData             = true,
 111 };
 112
 113 int
 114 lookup(token_t *tbl, char *m)
 115 {
 116      token_t    *tp;
 117
 118      for(tp = tbl; tp->name != NULL; tp++)
 119           if(strcasecmp(tp->name, m) == 0)
 120                return tp->val;
 121      return 0;
 122 }
 123
 124 int
 125 main(int cc, char **vv)
 126 {
 127      int        ch, disco;
 128      char       *pname, *p, *q, *ta, *kw;
 129      isc_opt_t  *op;
 130      FILE       *fd;
 131
 132      /* Try to load iscsi_initiator module before starting its operation */
 133      if (modfind(INITIATORMOD) < 0) {
 134              if (kldload(INITIATORMOD) < 0 || modfind(INITIATORMOD) < 0) {
 135                      perror(INITIATORMOD ": Error while handling kernel module");
 136                      return 1;
 137              }
 138      }
 139
 140      op = &opvals;
 141      iscsidev = "/dev/"ISCSIDEV;
 142      fd = NULL;
 143      pname = vv[0];
 144      if((p = strrchr(pname, '/')) != NULL)
 145           pname = p + 1;
 146
 147      kw = ta = NULL;
 148      disco = 0;
 149
 150      while((ch = getopt(cc, vv, OPTIONS)) != -1) {
 151           switch(ch) {
 152           case 'v':
 153                vflag++;
 154                break;
 155           case 'c':
 156                fd = fopen(optarg, "r");
 157                if(fd == NULL) {
 158                     perror(optarg);
 159                     exit(1);
 160                }
 161                break;
 162           case 'd':
 163                disco = 1;
 164                break;
 165           case 't':
 166                ta = optarg;
 167                break;
 168           case 'n':
 169                kw = optarg;
 170                break;
 171           default:
 172           badu:
 173                fprintf(stderr, "Usage: %s %s\n", pname, USAGE);
 174                exit(1);
 175           }
 176      }
 177      if(fd == NULL)
 178           fd = fopen("/etc/iscsi.conf", "r");
 179
 180      if(fd != NULL) {
 181           parseConfig(fd, kw, op);
 182           fclose(fd);
 183      }
 184      cc -= optind;
 185      vv += optind;
 186      if(cc > 0) {
 187           if(vflag)
 188                printf("adding '%s'\n", *vv);
 189           parseArgs(cc, vv, op);
 190      }
 191      if(ta)
 192           op->targetAddress = ta;
 193
 194      if(op->targetAddress == NULL) {
 195           fprintf(stderr, "No target!\n");
 196           goto badu;
 197      }
 198      q = op->targetAddress;
 199      if(*q == '[' && (q = strchr(q, ']')) != NULL) {
 200           *q++ = '\0';
 201           op->targetAddress++;
 202      } else
 203           q = op->targetAddress;
 204      if((p = strchr(q, ':')) != NULL) {
 205           *p++ = 0;
 206           op->port = atoi(p);
 207           p = strchr(p, ',');
 208      }
 209      if(p || ((p = strchr(q, ',')) != NULL)) {
 210           *p++ = 0;
 211           op->targetPortalGroupTag = atoi(p);
 212      }
 213      if(op->initiatorName == 0) {
 214           char  hostname[256];
 215
 216           if(op->iqn) {
 217                if(gethostname(hostname, sizeof(hostname)) == 0)
 218                     asprintf(&op->initiatorName, "%s:%s", op->iqn, hostname);
 219                else
 220                     asprintf(&op->initiatorName, "%s:%d", op->iqn, (int)time(0) & 0xff); // XXX:
 221           }
 222           else {
 223                if(gethostname(hostname, sizeof(hostname)) == 0)
 224                     asprintf(&op->initiatorName, "%s", hostname);
 225                else
 226                     asprintf(&op->initiatorName, "%d", (int)time(0) & 0xff); // XXX:
 227           }
 228      }
 229      if(disco) {
 230           op->sessionType = "Discovery";
 231           op->targetName = 0;
 232      }
 233
 234      fsm(op);
 235
 236      exit(0);
 237 }